win32多线程-新版本MtVerify.h

api调用错误诊断宏，对GetLastError()函数的封装，并解析错误

从网上找的版本并进行了部分修改

  /*
  * MtVerify.h
  *
  * The function PrintError() is marked as __inline so that it can be
  * included from one or more C or C++ files without multiple definition
  * errors.
  * To use the PrintError() in an application, it should be taken out,
  * placed in its own source file, and the "__inline" declaration removed
  * so the function will be globally available.
  * [Modified by thinkhy 10/01/04] ...
  * [Modified by thinkhy 10/01/07] Added function Myverify.
  */  

#pragma comment( lib,   "USER32"   )
#define MTASSERT(a) _ASSERTE(a)  

#ifdef _DEBUG
#define MTVERIFY(a) MyVerify(a,_T(#a))
#else
#define MTVERIFY(f)          ((  void  )(f))
#endif  

__inline  void   PrintError(LPTSTR filename,  int   lineno, LPTSTR lpszFunc, DWORD errnum)
{
	LPTSTR lpBuffer;
	TCHAR errbuf[ 256  ];
#ifdef _WINDOWS
	TCHAR modulename[MAX_PATH];
#else    // _WINDOWS
	DWORD numread;
#endif    // _WINDOWS  

	FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER
		| FORMAT_MESSAGE_FROM_SYSTEM,
		NULL  ,
		errnum,
		LANG_NEUTRAL,
		(LPTSTR)&lpBuffer,  // 这个参数很变态! [Commented by thinkhy 10/01/04]
		0  ,
		NULL   );

	wsprintf(errbuf, _T("Failed at Line: %d in File: %s \r\n\nFunction: %s \r\n\nReason: %s"),
		lineno, filename, lpszFunc, lpBuffer);
#ifndef _WINDOWS
	WriteFile(GetStdHandle(STD_ERROR_HANDLE), errbuf, strlen(errbuf), &numread, FALSE );
	Sleep( 3000  );
#else
	GetModuleFileName( NULL  , modulename, MAX_PATH);
	MessageBox( NULL  , errbuf, modulename, MB_ICONWARNING|MB_OK|MB_TASKMODAL|MB_SETFOREGROUND);
#endif
	// exit(EXIT_FAILURE);
	return  ;
}

__inline BOOL MyVerify(BOOL what,LPTSTR lpszFunc)
{
#ifdef _DEBUG
	if   (!what)
		PrintError(_T( __FILE__  ),  __LINE__  , lpszFunc,GetLastError());
#endif
	return   what;
}

WriteFile(GetStdHandle(STD_ERROR_HANDLE), errbuf, strlen(errbuf), &numread, FALSE ); //错误输出到console窗口

GetStdHandle它用于从一个特定的标准设备（标准输入、标准输出或标准错误）中取得一个句柄。

事例如下：

#include <windows.h>
//GetStdHandle和SetConsoleTextAttribute在头文件windows.h中
#include <iostream>
using namespace std;
void SetColor(unsigned short ForeColor=3,unsigned short BackGroundColor=0)
//给参数默认值，使它
//可以接受0/1/2个参数
{
	HANDLE hCon = GetStdHandle(STD_OUTPUT_HANDLE); //本例以输出为例
	SetConsoleTextAttribute(hCon,ForeColor|BackGroundColor);
}
int main()
{
	SetColor();
	std::cout<<"Hello world!"<<endl;
	SetColor(40,30);
	std::cout<<"Hello world!"<<endl;
	std::cout<<"Hello world!"<<endl;

	getchar();
	return 0;
}